Avoid creating products with duplicate codes
Fix: File filter should accept folders for it to work on windows computers
Show busy mouse pointer when import is running
Use uppercase to check for duplicate names or codes ignoring files's case | Only add importedNames and importeCodes when a product has been found
Convert the selected product family to ProductFamilyLeaf if necessary
Update the products in the same for loop used to iterate XLS File | If there is a database error ignore that file and continue with the rest